/*
 * Copyright 2011 J. Auer, J. Andert, F.-J. Jendrusch, U. Celebi
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package de.fuberlin.replication.application.android;

import android.app.Activity;

/**
 * Rotation callback interface.
 */
public interface Rotatable {
	/**
	 * Returns the current activity. If no activity is set, blocks until an activity is set.
	 * 
	 * @return the current activity.
	 * @see Rotatable#setActivity(Activity)
	 */
	Activity getActivity();

	/**
	 * Sets the current activity. If the given activity is not null, wakes up any waiting
	 * {@link Rotatable#getActivity()} call.
	 * 
	 * @param activity the current activity.
	 * @see Rotatable#getActivity()
	 */
	void setActivity(Activity activity);
}